Datasheet AD8310 (Analog Devices) - 3

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AD8310 SPECIFICATIONS
TA = 25°C, VS = 5 V, unless otherwise noted.
Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
INPUT STAGE Inputs INHI, INLO Maximum Input1 Single-ended, p-p ±2.0 ±2.2 V 4 dBV Equivalent Power in 50 Ω Termination resistor of 52.3 Ω 17 dBm Differential drive, p-p 20 dBm Noise Floor Terminated 50 Ω source 1.28 nV/√Hz Equivalent Power in 50 Ω 440 MHz bandwidth −78 dBm Input Resistance From INHI to INLO 800 1000 1200 Ω Input Capacitance From INHI to INLO 1.4 pF DC Bias Voltage Either input 3.2 V LOGARITHMIC AMPLIFIER Output VOUT ±3 dB Error Dynamic Range From noise floor to maximum input 95 dB Transfer Slope 10 MHz ≤ f ≤ 200 MHz 22 24 26 mV/dB Overtemperature, −40°C < TA < +85°C 20 26 mV/dB Intercept (Log Offset)2 10 MHz ≤ f ≤ 200 MHz −115 −108 −99 dBV Equivalent dBm (re 50 Ω) −102 −95 −86 dBm Overtemperature, −40°C ≤ TA ≤ +85°C −120 −96 dBV Equivalent dBm (re 50 Ω) −107 −83 dBm Temperature sensitivity −0.04 dB/°C Linearity Error (Ripple) Input from −88 dBV (−75 dBm) to +2 dBV (+15 dBm) ±0.4 dB Output Voltage Input = −91 dBV (−78 dBm) 0.4 V Input = 9 dBV (22 dBm) 2.6 V Minimum Load Resistance, RL 100 Ω Maximum Sink Current 0.5 mA Output Resistance 0.05 Ω Video Bandwidth 25 MHz Rise Time (10% to 90%) Input level = −43 dBV (−30 dBm), RL ≥ 402 Ω, CL ≤ 68 pF 15 ns Input level = −3 dBV (+10 dBm), RL ≥ 402 Ω, CL ≤ 68 pF 20 ns Fall Time (90% to 10%) Input level = −43 dBV (−30 dBm), RL ≥ 402 Ω, CL ≤ 68 pF 30 ns Input level = −3 dBV (+10 dBm), RL ≥ 402 Ω, CL ≤ 68 pF 40 ns Output Settling Time to 1% Input level = −13 dBV (0 dBm), RL ≥ 402 Ω, CL ≤ 68 pF 40 ns POWER INTERFACES Supply Voltage, VPOS 2.7 5.5 V Quiescent Current Zero signal 6.5 8.0 9.5 mA Overtemperature −40°C < TA < +85°C 5.5 8.5 10 mA Disable Current 0.05 μA Logic Level to Enable Power High condition, −40°C < TA < +85°C 2.3 V Input Current When High 3 V at ENBL 35 μA Logic Level to Disable Power Low condition, −40°C < TA < +85°C 0.8 V 1 The input level is specified in dBV, because logarithmic amplifiers respond strictly to voltage, not power. 0 dBV corresponds to a sinusoidal single-frequency input of 1 V rms. A power level of 0 dBm (1 mW) in a 50 Ω termination corresponds to an input of 0.2236 V rms. Therefore, the relationship between dBV and dBm is a fixed offset of 13 dBm in the special case of a 50 Ω termination. 2 Guaranteed but not tested; limits are specified at six sigma levels. Rev. F | Page 3 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PROGRESSIVE COMPRESSION SLOPE AND INTERCEPT CALIBRATION OFFSET CONTROL PRODUCT OVERVIEW ENABLE INTERFACE INPUT INTERFACE OFFSET INTERFACE OUTPUT INTERFACE USING THE AD8310 BASIC CONNECTIONS TRANSFER FUNCTION IN TERMS OF SLOPE AND INTERCEPT dBV vs. dBm INPUT MATCHING NARROW-BAND MATCHING GENERAL MATCHING PROCEDURE Step 1: Tune Out CIN Step 2: Calculate CO and LO Step 3: Split CO into Two Parts Step 4: Calculate LM SLOPE AND INTERCEPT ADJUSTMENTS INCREASING THE SLOPE TO A FIXED VALUE OUTPUT FILTERING LOWERING THE HIGH-PASS CORNER FREQUENCY OF THE OFFSET COMPENSATION LOOP APPLICATIONS INFORMATION CABLE-DRIVING DC-COUPLED INPUT EVALUATION BOARD DIE INFORMATION OUTLINE DIMENSIONS ORDERING GUIDE